The Power of Information

National Drinking Water Database


Bromoform in Maryland


Bromoform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water. [read more]

The Most Polluted Communities in Maryland

105 water utilities reported detecting Bromoform in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Bromoform level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Martingham Utilities Cooperative
St Michaels, MD
6753 of 317.25 ppb
(1.1 to 48.6 ppb)
2Bark Hill
Westminster, MD
1854 of 55.37 ppb
(0 to 21.3 ppb)
3Kitzmiller
Mountain Lake Park, MD
3702 of 24.38 ppb
(3.94 to 4.81 ppb)
4Town of Snow Hill
Snow Hill, MD
2,4093 of 63.8 ppb
(0 to 19.09 ppb)
5Town of Sharptown
Sharptown, MD
65016 of 173.64 ppb
(0 to 6.28 ppb)
6Naval Support Facility, Indian Head
Indian Head, MD
3,4604 of 62.98 ppb
(0 to 6.73 ppb)
7Conococheague Apartments
Hedgesville, MD
502 of 32.52 ppb
(0 to 7 ppb)
8Ocean Pines
Berlin, MD
11,0007 of 131.54 ppb
(0 to 5.3 ppb)
9Ocean City
Ocean City, MD
30,00014 of 171.38 ppb
(0 to 3.1 ppb)
10Town of Indian Head
Indian Head, MD
4,1001 of 31.34 ppb
(0 to 4.01 ppb)

Health Based Limits for Bromoform

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.4.3 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.8 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.80 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.200 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.800 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.1000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.5000 ppb

Violation Summary for Bromoform in Maryland

There are no violations reported for this contaminant in Maryland